PHP表单没有显示错误而没有重新加载google recaptcha

Question

我正在尝试实现一个表单，以便在重新验证框旁边的某些验证字段时显示错误。

我的问题是当recaptcha没有设置电子邮件和名称错误显示，并且当设置recaptcha时，没有显示任何电子邮件或名称错误。如果有任何错误，点击提交按钮也会在重新加载时显示重新显示？以及页面滚动回到顶部（使用scrollify.js），但我觉得完全是另一个问题

任何帮助将不胜感激

我在帖子提交和$ res [＆＃39;成功＆＃39;]上有isset功能，以防止页面加载时重新显示错误显示

formphp如下

<?php

function post_captcha($user_response) {
    $fields_string = '';
    $fields = array(
        'secret' => 'secret',
        'response' => $user_response
    );
    foreach($fields as $key=>$value)
        $fields_string .= $key . '=' . $value . '&';

    $fields_string = rtrim($fields_string, '&');

    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, 'https://www.google.com/recaptcha/api/siteverify');
    curl_setopt($ch, CURLOPT_POST, count($fields));
    curl_setopt($ch, CURLOPT_POSTFIELDS, $fields_string);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, True);

    $result = curl_exec($ch);
    curl_close($ch);

    return json_decode($result, true);
}

$res = post_captcha($_POST['g-recaptcha-response']);

$name_error = $email_error = "";
$name = $email = $message = $sent = "";

if (isset($_POST['submit']) AND (!$res['success'])) {
    // What happens when the CAPTCHA wasn't checked
    echo '<p>Please go back and make sure you check the security CAPTCHA box.</p><br>';
} else if ($_SERVER["REQUEST_METHOD"] == "POST") {
    if (empty($_POST["name1"])) {
        $name_error = "Name is required";
    } else {
        $name = test_input($_POST["name1"]);
        // check if name only contains letters and whitespace

        if (!preg_match("/^[a-zA-Z ]*$/",$name)) {
            $name_error = "Only letters and white space allowed";
        }
    }

    if (empty($_POST["email"])) {
        $email_error = "Email is required";
    } else {

        $email = test_input($_POST["email"]);
        // check if e-mail address is well-formed
        if (!filter_var($email, FILTER_VALIDATE_EMAIL)) {
            $email_error = "Invalid email format";
        }
    }

    if (empty($_POST["message"])) {
        $message = "";
    } else {
        $message = test_input($_POST["message"]);
    }

    if ($name_error == '' and $email_error == '' ){
        $message_body = '';
        unset($_POST['submit']);

        foreach ($_POST as $key => $value){
            $message_body .=  "$key: $value\n";
        }

        $email = $_POST['email'];
        $to = 'gmail.com';
        $subject = 'Contact Form Submit';
        $headers = 'From:' . $email . "\n" . 'Reply-to: ' . $email . "\n"  ;
        if (mail($to, $subject, $message, $headers)) {
            $sent = "Message sent";
            $name = $email = $message = '';
        }
    }
}
function test_input($data) {
    $data = trim($data);
    $data = stripslashes($data);
    $data = htmlspecialchars($data);
    return $data;
}
?>

html for form

    <div class="grey">
            <div class="container-contact">
                <form id="contact" method="post">
                    <div id="column-contact-left">
                    <div class='contact-logo'></div>
                    <h3>Contact the Devon Food Movement</h3>
                    <fieldset id="field-no-ui">
                        <input placeholder="Your name" type="text" tabindex="1" name="name1" value="<?= $name ?>" >

                    </fieldset>
                    <span class="error"><?= $name_error ?></span>
                    <fieldset id="field-no-ui">
                        <input placeholder="Your Email Address" type="text" name="email" value="<?= $email ?>" tabindex="2" >

                    </fieldset>
                    <span class="error"><?= $email_error ?></span>
                    </div>
                    <div id="column-contact-right">
                    <fieldset id="field-no-ui">
                        <textarea id="field-no-ui" placeholder="Type your Message Here...." name="message" value="<?= $message ?>" tabindex="3" ></textarea>
                    </fieldset>
                    <div class="g-recaptcha" data-sitekey="6LfJtkcUAAAAAE_7Ob_7BVMkaZMXX-dH-V6uqjCn" ></div>
                    <span class="success"><?= $sent; ?></span>
                    <fieldset id="field-no-ui">
                        <button name="submit" type="submit" id="contact-submit" data-submit="...Sending">Submit</button>
                    </fieldset>
                    </div>
                </form>
            </div>
    </div>